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                <h1 id="firstHeading" class="firstHeading">Fixed width integer types <span class="t-mark-rev t-since-c99">(since C99)</span>
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<li class="toclevel-1 tocsection-1"><a href="integer.html%23Types"><span class="tocnumber">1</span> <span class="toctext">Types</span></a></li>
<li class="toclevel-1 tocsection-2">
<a href="integer.html%23Macro_constants"><span class="tocnumber">2</span> <span class="toctext">Macro constants</span></a>
<ul>
<li class="toclevel-2"><a href="integer.html%23Signed_integers_%3A_minimum_value"><span class="tocnumber">2.1</span> <span class="toctext">Signed integers : minimum value</span></a></li>
<li class="toclevel-2"><a href="integer.html%23Signed_integers_%3A_maximum_value"><span class="tocnumber">2.2</span> <span class="toctext">Signed integers : maximum value</span></a></li>
<li class="toclevel-2"><a href="integer.html%23Unsigned_integers_%3A_maximum_value"><span class="tocnumber">2.3</span> <span class="toctext">Unsigned integers : maximum value</span></a></li>
</ul>
</li>
<li class="toclevel-1 tocsection-3">
<a href="integer.html%23Format_macro_constants"><span class="tocnumber">3</span> <span class="toctext">Format macro constants</span></a>
<ul>
<li class="toclevel-2"><a href="integer.html%23Format_constants_for_the_fprintf_family_of_functions"><span class="tocnumber">3.1</span> <span class="toctext">Format constants for the <span>fprintf</span> family of functions</span></a></li>
<li class="toclevel-2"><a href="integer.html%23Format_constants_for_the_fscanf_family_of_functions"><span class="tocnumber">3.2</span> <span class="toctext">Format constants for the <span>fscanf</span> family of functions</span></a></li>
</ul>
</li>
<li class="toclevel-1 tocsection-4"><a href="integer.html%23Example"><span class="tocnumber">4</span> <span class="toctext">Example</span></a></li>
<li class="toclevel-1 tocsection-5"><a href="integer.html%23See_also"><span class="tocnumber">5</span> <span class="toctext">See also</span></a></li>
</ul>
</td></tr></table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Types">edit</a>]</span> <span class="mw-headline" id="Types">Types</span>
</h3>
<table class="t-dsc-begin">

<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code>&lt;stdint.h&gt;</code> </div>
</td>
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</td>
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<td>  <code>int8_t</code><br><code>int16_t</code><br><code>int32_t</code><br><code>int64_t</code>
</td>
<td>  signed integer type with width of<br> exactly 8, 16, 32 and 64 bits respectively<br>with no padding bits and using 2's complement for negative values<br>(provided only if the implementation directly supports the type)
</td>
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<td>  <code>int_fast8_t</code><br><code>int_fast16_t</code><br><code>int_fast32_t</code><br><code>int_fast64_t</code>
</td>
<td>  fastest signed signed integer type with width of<br> at least 8, 16, 32 and 64 bits respectively
</td>
</tr>


<tr class="t-dsc-sep">
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</td>
</tr>
<tr class="t-dsc">
<td>  <code>int_least8_t</code><br><code>int_least16_t</code><br><code>int_least32_t</code><br><code>int_least64_t</code>
</td>
<td>  smallest signed integer type with width of<br> at least 8, 16, 32 and 64 bits respectively
</td>
</tr>


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<td colspan="2">
</td>
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<td>  <code>intmax_t</code>
</td>
<td>  maximum width integer type
</td>
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<tr class="t-dsc-sep">
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</td>
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<td>  <code>intptr_t</code>
</td>
<td>  integer type capable of holding a pointer
</td>
</tr>

<tr class="t-dsc-sep">
<td colspan="2">
</td>
</tr>
<tr class="t-dsc">
<td>  <code>uint8_t</code><br><code>uint16_t</code><br><code>uint32_t</code><br><code>uint64_t</code>
</td>
<td>  unsigned integer type with width of<br> exactly 8, 16, 32 and 64 bits respectively <br>(provided only if the implementation directly supports the type)
</td>
</tr>


<tr class="t-dsc-sep">
<td colspan="2">
</td>
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<td>  <code>uint_fast8_t</code><br><code>uint_fast16_t</code><br><code>uint_fast32_t</code><br><code>uint_fast64_t</code>
</td>
<td>  fastest unsigned unsigned integer type with width of<br> at least 8, 16, 32 and 64 bits respectively
</td>
</tr>


<tr class="t-dsc-sep">
<td colspan="2">
</td>
</tr>
<tr class="t-dsc">
<td>  <code>uint_least8_t</code><br><code>uint_least16_t</code><br><code>uint_least32_t</code><br><code>uint_least64_t</code>
</td>
<td>  smallest unsigned integer type with width of<br> at least 8, 16, 32 and 64 bits respectively
</td>
</tr>


<tr class="t-dsc-sep">
<td colspan="2">
</td>
</tr>
<tr class="t-dsc">
<td>  <code>uintmax_t</code>
</td>
<td>  maximum width unsigned integer type
</td>
</tr>


<tr class="t-dsc-sep">
<td colspan="2">
</td>
</tr>
<tr class="t-dsc">
<td>  <code>uintptr_t</code>
</td>
<td>  unsigned integer type capable of holding a pointer
</td>
</tr>

</table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Macro constants">edit</a>]</span> <span class="mw-headline" id="Macro_constants">Macro constants</span>
</h3>
<table class="t-dsc-begin">

<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code>&lt;stdint.h&gt;</code> </div>
</td>
</tr>

<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Signed_integers_:_minimum_value">  Signed integers : minimum value </span>
</h5>
</td>
</tr>

<tr class="t-dsc-sep">
<td colspan="2">
</td>
</tr>
<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>INT8_MIN<br>INT16_MIN<br>INT32_MIN<br>INT64_MIN</div></div>
</td>
<td>    minimum value of an object of type <span class="t-lc"><strong class="selflink">int8_t</strong></span>, <span class="t-lc"><strong class="selflink">int16_t</strong></span>, <span class="t-lc"><strong class="selflink">int32_t</strong></span>, <span class="t-lc"><strong class="selflink">int64_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


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</td>
</tr>
<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>INT_FAST8_MIN<br>INT_FAST16_MIN<br>INT_FAST32_MIN<br>INT_FAST64_MIN</div></div>
</td>
<td>    minimum value of an object of type <span class="t-lc"><strong class="selflink">int_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast64_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


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<td colspan="2">
</td>
</tr>
<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>INT_LEAST8_MIN<br>INT_LEAST16_MIN<br>INT_LEAST32_MIN<br>INT_LEAST64_MIN</div></div>
</td>
<td>    minimum value of an object of type <span class="t-lc"><strong class="selflink">int_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least64_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


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<td colspan="2">
</td>
</tr>
<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>INTPTR_MIN</div></div>
</td>
<td>   minimum value of an object of type <span class="t-lc"><strong class="selflink">intptr_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc-sep">
<td colspan="2">
</td>
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<td>  <div class="t-dsc-member-div"><div>INTMAX_MIN</div></div>
</td>
<td>   minimum value of an object of type <span class="t-lc"><strong class="selflink">intmax_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Signed_integers_:_maximum_value">  Signed integers : maximum value </span>
</h5>
</td>
</tr>


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<td colspan="2">
</td>
</tr>
<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>INT8_MAX<br>INT16_MAX<br>INT32_MAX<br>INT64_MAX</div></div>
</td>
<td>    maximum value of an object of type <span class="t-lc"><strong class="selflink">int8_t</strong></span>, <span class="t-lc"><strong class="selflink">int16_t</strong></span>, <span class="t-lc"><strong class="selflink">int32_t</strong></span>, <span class="t-lc"><strong class="selflink">int64_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


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<td colspan="2">
</td>
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<td>  <div class="t-dsc-member-div"><div>INT_FAST8_MAX<br>INT_FAST16_MAX<br>INT_FAST32_MAX<br>INT_FAST64_MAX</div></div>
</td>
<td>    maximum value of an object of type <span class="t-lc"><strong class="selflink">int_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast64_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>INT_LEAST8_MAX<br>INT_LEAST16_MAX<br>INT_LEAST32_MAX<br>INT_LEAST64_MAX</div></div>
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<td>    maximum value of an object of type <span class="t-lc"><strong class="selflink">int_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least64_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>INTPTR_MAX</div></div>
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<td>   maximum value of an object of type <span class="t-lc"><strong class="selflink">intptr_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>INTMAX_MAX</div></div>
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<td>   maximum value of an object of type <span class="t-lc"><strong class="selflink">intmax_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
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<td colspan="2"> <h5> <span class="mw-headline" id="Unsigned_integers_:_maximum_value">  Unsigned integers : maximum value </span>
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<td>  <div class="t-dsc-member-div"><div>UINT8_MAX<br>UINT16_MAX<br>UINT32_MAX<br>UINT64_MAX</div></div>
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<td>    maximum value of an object of type <span class="t-lc"><strong class="selflink">uint8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint64_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>UINT_FAST8_MAX<br>UINT_FAST16_MAX<br>UINT_FAST32_MAX<br>UINT_FAST64_MAX</div></div>
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<td>    maximum value of an object of type <span class="t-lc"><strong class="selflink">uint_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast64_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>UINT_LEAST8_MAX<br>UINT_LEAST16_MAX<br>UINT_LEAST32_MAX<br>UINT_LEAST64_MAX</div></div>
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<td>    maximum value of an object of type <span class="t-lc"><strong class="selflink">uint_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least64_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>UINTPTR_MAX</div></div>
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<td>   maximum value of an object of type <span class="t-lc"><strong class="selflink">uintptr_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>UINTMAX_MAX</div></div>
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<td>   maximum value of an object of type <span class="t-lc"><strong class="selflink">uintmax_t</strong></span>  <br> <span class="t-mark">(macro constant)</span>
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<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Format macro constants">edit</a>]</span> <span class="mw-headline" id="Format_macro_constants">Format macro constants</span>
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<td class="mbox-text" style="">This section is incomplete<br>Reason: will look better as a table </td>
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<td colspan="2"> <div>Defined in header <code>&lt;inttypes.h&gt;</code> </div>
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<td colspan="2"> <h5> <span class="mw-headline" id="Format_constants_for_the_fprintf_family_of_functions">  Format constants for the <span class="t-lc"><a href="../io/fprintf.html" title="c/io/fprintf">fprintf</a></span> family of functions </span>
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<td>  <div class="t-dsc-member-div"><div>PRId8<br>PRId16<br>PRId32<br>PRId64<br>PRIdLEAST8<br>PRIdLEAST16<br>PRIdLEAST32<br>PRIdLEAST64<br>PRIdFAST8<br>PRIdFAST16<br>PRIdFAST32<br>PRIdFAST64<br>PRIdMAX<br>PRIdPTR</div></div>
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<td>   format conversion specifier to output a signed decimal integer value of type <span class="t-lc"><strong class="selflink">int8_t</strong></span>, <span class="t-lc"><strong class="selflink">int16_t</strong></span>, <span class="t-lc"><strong class="selflink">int32_t</strong></span>, <span class="t-lc"><strong class="selflink">int64_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least64_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast64_t</strong></span>, <span class="t-lc"><strong class="selflink">intmax_t</strong></span>, <span class="t-lc"><strong class="selflink">intptr_t</strong></span> respectively, equivalent to <code>%d</code> for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>PRIi8<br>PRIi16<br>PRIi32<br>PRIi64<br>PRIiLEAST8<br>PRIiLEAST16<br>PRIiLEAST32<br>PRIiLEAST64<br>PRIiFAST8<br>PRIiFAST16<br>PRIiFAST32<br>PRIiFAST64<br>PRIiMAX<br>PRIiPTR</div></div>
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<td>   format conversion specifier to output a signed decimal integer value of type <span class="t-lc"><strong class="selflink">int8_t</strong></span>, <span class="t-lc"><strong class="selflink">int16_t</strong></span>, <span class="t-lc"><strong class="selflink">int32_t</strong></span>, <span class="t-lc"><strong class="selflink">int64_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least64_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast64_t</strong></span>, <span class="t-lc"><strong class="selflink">intmax_t</strong></span>, <span class="t-lc"><strong class="selflink">intptr_t</strong></span> respectively, equivalent to <code>%i</code> for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>PRIu8<br>PRIu16<br>PRIu32<br>PRIu64<br>PRIuLEAST8<br>PRIuLEAST16<br>PRIuLEAST32<br>PRIuLEAST64<br>PRIuFAST8<br>PRIuFAST16<br>PRIuFAST32<br>PRIuFAST64<br>PRIuMAX<br>PRIuPTR</div></div>
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<td>   format conversion specifier to output an unsigned decimal integer value of type <span class="t-lc"><strong class="selflink">uint8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast64_t</strong></span>, <span class="t-lc"><strong class="selflink">uintmax_t</strong></span>, <span class="t-lc"><strong class="selflink">uintptr_t</strong></span> respectively, equivalent to <code>%u</code> for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">int</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>PRIo8<br>PRIo16<br>PRIo32<br>PRIo64<br>PRIoLEAST8<br>PRIoLEAST16<br>PRIoLEAST32<br>PRIoLEAST64<br>PRIoFAST8<br>PRIoFAST16<br>PRIoFAST32<br>PRIoFAST64<br>PRIoMAX<br>PRIoPTR</div></div>
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<td>   format conversion specifier to output an unsigned octal integer value of type <span class="t-lc"><strong class="selflink">uint8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast64_t</strong></span>, <span class="t-lc"><strong class="selflink">uintmax_t</strong></span>, <span class="t-lc"><strong class="selflink">uintptr_t</strong></span> respectively, equivalent to <code>%o</code> for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">int</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>PRIx8<br>PRIx16<br>PRIx32<br>PRIx64<br>PRIxLEAST8<br>PRIxLEAST16<br>PRIxLEAST32<br>PRIxLEAST64<br>PRIxFAST8<br>PRIxFAST16<br>PRIxFAST32<br>PRIxFAST64<br>PRIxMAX<br>PRIxPTR</div></div>
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<td>   format conversion specifier to output an unsigned hexadecimal integer value of type <span class="t-lc"><strong class="selflink">uint8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast64_t</strong></span>, <span class="t-lc"><strong class="selflink">uintmax_t</strong></span>, <span class="t-lc"><strong class="selflink">uintptr_t</strong></span> respectively, equivalent to <code>%x</code> for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">int</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>PRIX8<br>PRIX16<br>PRIX32<br>PRIX64<br>PRIXLEAST8<br>PRIXLEAST16<br>PRIXLEAST32<br>PRIXLEAST64<br>PRIXFAST8<br>PRIXFAST16<br>PRIXFAST32<br>PRIXFAST64<br>PRIXMAX<br>PRIXPTR</div></div>
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<td>   format conversion specifier to output an unsigned uppercase hexadecimal integer value of type <span class="t-lc"><strong class="selflink">uint8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast64_t</strong></span>, <span class="t-lc"><strong class="selflink">uintmax_t</strong></span>, <span class="t-lc"><strong class="selflink">uintptr_t</strong></span> respectively, equivalent to <code>%X</code> for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">int</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
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<td colspan="2"> <h5> <span class="mw-headline" id="Format_constants_for_the_fscanf_family_of_functions">  Format constants for the <span class="t-lc"><a href="../io/fscanf.html" title="c/io/fscanf">fscanf</a></span> family of functions </span>
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<td>  <div class="t-dsc-member-div"><div>SCNd8<br>SCNd16<br>SCNd32<br>SCNd64<br>SCNdLEAST8<br>SCNdLEAST16<br>SCNdLEAST32<br>SCNdLEAST64<br>SCNdFAST8<br>SCNdFAST16<br>SCNdFAST32<br>SCNdFAST64<br>SCNdMAX<br>SCNdPTR</div></div>
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<td>   format conversion specifier to input a signed decimal integer value of type <span class="t-lc"><strong class="selflink">int8_t</strong></span>, <span class="t-lc"><strong class="selflink">int16_t</strong></span>, <span class="t-lc"><strong class="selflink">int32_t</strong></span>, <span class="t-lc"><strong class="selflink">int64_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least64_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast64_t</strong></span>, <span class="t-lc"><strong class="selflink">intmax_t</strong></span>, <span class="t-lc"><strong class="selflink">intptr_t</strong></span> respectively, equivalent to <code>%d</code> for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>SCNi8<br>SCNi16<br>SCNi32<br>SCNi64<br>SCNiLEAST8<br>SCNiLEAST16<br>SCNiLEAST32<br>SCNiLEAST64<br>SCNiFAST8<br>SCNiFAST16<br>SCNiFAST32<br>SCNiFAST64<br>SCNiMAX<br>SCNiPTR</div></div>
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<td>   format conversion specifier to input a signed decimal/octal/hexadecimal integer value of type <span class="t-lc"><strong class="selflink">int8_t</strong></span>, <span class="t-lc"><strong class="selflink">int16_t</strong></span>, <span class="t-lc"><strong class="selflink">int32_t</strong></span>, <span class="t-lc"><strong class="selflink">int64_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">int_least64_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">int_fast64_t</strong></span>, <span class="t-lc"><strong class="selflink">intmax_t</strong></span>, <span class="t-lc"><strong class="selflink">intptr_t</strong></span> respectively, equivalent to <code>%i</code> for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>SCNu8<br>SCNu16<br>SCNu32<br>SCNu64<br>SCNuLEAST8<br>SCNuLEAST16<br>SCNuLEAST32<br>SCNuLEAST64<br>SCNuFAST8<br>SCNuFAST16<br>SCNuFAST32<br>SCNuFAST64<br>SCNuMAX<br>SCNuPTR</div></div>
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<td>   format conversion specifier to input an unsigned decimal integer value of type <span class="t-lc"><strong class="selflink">uint8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast64_t</strong></span>, <span class="t-lc"><strong class="selflink">uintmax_t</strong></span>, <span class="t-lc"><strong class="selflink">uintptr_t</strong></span> respectively, equivalent to <code>%u</code> for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">int</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
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<td>  <div class="t-dsc-member-div"><div>SCNo8<br>SCNo16<br>SCNo32<br>SCNo64<br>SCNoLEAST8<br>SCNoLEAST16<br>SCNoLEAST32<br>SCNoLEAST64<br>SCNoFAST8<br>SCNoFAST16<br>SCNoFAST32<br>SCNoFAST64<br>SCNoMAX<br>SCNoPTR</div></div>
</td>
<td>   format conversion specifier to input an unsigned octal integer value of type <span class="t-lc"><strong class="selflink">uint8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast64_t</strong></span>, <span class="t-lc"><strong class="selflink">uintmax_t</strong></span>, <span class="t-lc"><strong class="selflink">uintptr_t</strong></span> respectively, equivalent to <code>%o</code> for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">int</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc-sep">
<td colspan="2">
</td>
</tr>
<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>SCNx8<br>SCNx16<br>SCNx32<br>SCNx64<br>SCNxLEAST8<br>SCNxLEAST16<br>SCNxLEAST32<br>SCNxLEAST64<br>SCNxFAST8<br>SCNxFAST16<br>SCNxFAST32<br>SCNxFAST64<br>SCNxMAX<br>SCNxPTR</div></div>
</td>
<td>   format conversion specifier to input an unsigned hexadecimal integer value of type <span class="t-lc"><strong class="selflink">uint8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast64_t</strong></span>, <span class="t-lc"><strong class="selflink">uintmax_t</strong></span>, <span class="t-lc"><strong class="selflink">uintptr_t</strong></span> respectively, equivalent to <code>%x</code> for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">int</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc-sep">
<td colspan="2">
</td>
</tr>
<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>SCNX8<br>SCNX16<br>SCNX32<br>SCNX64<br>SCNXLEAST8<br>SCNXLEAST16<br>SCNXLEAST32<br>SCNXLEAST64<br>SCNXFAST8<br>SCNXFAST16<br>SCNXFAST32<br>SCNXFAST64<br>SCNXMAX<br>SCNXPTR</div></div>
</td>
<td>   format conversion specifier to input an unsigned uppercase hexadecimal integer value of type <span class="t-lc"><strong class="selflink">uint8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_least64_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast8_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast16_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast32_t</strong></span>, <span class="t-lc"><strong class="selflink">uint_fast64_t</strong></span>, <span class="t-lc"><strong class="selflink">uintmax_t</strong></span>, <span class="t-lc"><strong class="selflink">uintptr_t</strong></span> respectively, equivalent to <code>%X</code> for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">int</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>

</table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Example">edit</a>]</span> <span class="mw-headline" id="Example">Example</span>
</h3>
<div class="t-example">
<div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include &lt;stdio.h&gt;</span>
<span class="co2">#include &lt;inttypes.h&gt;</span>
 
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
    <a href="../io/fprintf.html"><span class="kw613">printf</span></a><span class="br0">(</span><span class="st0">"%zu<span class="es1">\n</span>"</span>, <span class="kw4">sizeof</span><span class="br0">(</span>int64_t<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw613">printf</span></a><span class="br0">(</span><span class="st0">"%s<span class="es1">\n</span>"</span>, PRId64<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw613">printf</span></a><span class="br0">(</span><span class="st0">"%+"</span>PRId64<span class="st0">"<span class="es1">\n</span>"</span>, INT64_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw613">printf</span></a><span class="br0">(</span><span class="st0">"%+"</span>PRId64<span class="st0">"<span class="es1">\n</span>"</span>, INT64_MAX<span class="br0">)</span><span class="sy4">;</span>
 
    int64_t n <span class="sy1">=</span> <span class="nu0">7</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw613">printf</span></a><span class="br0">(</span><span class="st0">"%+"</span>PRId64<span class="st0">"<span class="es1">\n</span>"</span>, n<span class="br0">)</span><span class="sy4">;</span>
 
    <span class="kw1">return</span> <span class="nu0">0</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>Possible output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">8
ld
-9223372036854775808
+9223372036854775807
+7</pre></div></div> 
</div>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: See also">edit</a>]</span> <span class="mw-headline" id="See_also">See also</span>
</h3>
<ul>
<li> <a href="../../cpp/language/types.html" title="cpp/language/types"> Arithmetic types</a>
</li>
<li> <a href="../../cpp/language/incomplete_type.html" title="cpp/language/type"> C++ type system overview</a>
</li>
<li> <a href="../../cpp/types.html" title="cpp/types"> Type support (basic types, RTTI, type traits)</a>
</li>
</ul>

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